Late Roman AR Ring Bezel Intaglio. Circa 5th century AD. NAVI MVCA (sic) draped and lightly bearded male bust to right / Blank. J. Spier, Late Antiquity and Early Christian Gems, Wiesbaden 2007, cf. 50-1. 2.39g, 11mm.
Condition as seen.
From the inventory of a UK dealer.